Twitter is a famous network site like Facebook .
We can post photos, thoughts, informations in Twitter .In Facebook we can type plenty of characters . But in Twitter it is limited .
There are no adding friends but followers .If we want to send message or a link, we can send it to a single or a group of followers .Twitter is one of the familiar social networking sites .
You can follow any Celeberity, Institution, Websites in this network .I have signed up in Twitter some few months back only .From other websites we can share our links to Twitter .Finally I want to say Twitter is a good Social Network Site .